Territory



hitch tetten @nicht @fitta Lafer@ Patent No. 74,347., dans Femm/.11,186e.

IMPROVEMENT 1N BQUALIZING DOUBLE-TREE.

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To ALL wnoM 1r MAY c'oNonRN:

Be it known that we, EDWARD GRIswoLmJoEL B. Cantine., and WILLIAM BLAY,ot'j Hel-eno, in the'county of Edgerton,` Montana Territory, haveinvented a new andzimproved Equalizing Double-Tree and we do herebydeclare that the followingis la full, clear, and exact descriptionthereof, Ywhich will enable others skilled in the art to make and usethe same, referencebeing hadV tc the accompanying drawings, forming partofv this specifi. cation, in which- Figure 1 is a to'p view of ourimproveddouble-tree., j

Figure'2 is a sidevview of the same, partly in section, through the line:v x, 1.

Similar letters of reference indicate correspondingparts'. i

Our invention has for its object tov furnish an improved double-tree',so constructed and arranged as to promote safety and economy, and avoidnoise and disarrangement; 'andl it cons-ists in n n improveddouble-tree, the end parts of which are hinged orjointed to the centralpart; in the combination of adraught-strap and rollersl with thedouble-tree or draught-bar, andinwthe combination of a 'rigid or exiblestrap with the end partszof.- the doubletree, and with draught-straps,the whole being constructed and arranged as hereinafter more fullydescribed. I

A is the double-tree, which is Vsecured to the tongue or draught-bar ofthe -vehicle by a bolt passing through the centre of said double-tree intheordinary manner. The double-tree is made in three parts or pieces,the end-pieces, al, being each about one quarter the length ofthecentral piece, a2. The end-pieces, al, are jointed to the ends ofthecen'tral part, a2, in such awaythat they'may be turned back, so as toform an angle of forty-tive degrees, (45%,) or mor e,rwith the centralpart, but cannot be drawn 4farther forward than to bein a straightlinewith said central part, however much power may be applied to them. Thejoints are covered .and protected by abend, B, passing aroundthe upper,lower, and rear sides of the double-tree, as shown in figs. 1 and 2.Clio the pieces al, near their outer ends, and to the central pieces,a2, upon each side of its middle point, are pivoted rollers C,`saidrollers being placed in pulley-boxes D,.securely attached to saiddouble-tree, as shown yin tho drawings. Around the rollers C arepassedstraps E, having hooks F, or their equivalents, attached to'theirends, for the attachment of the rtugs or traces, as shown in g. 1.ThesestrapgE, may bemade adjustable, by means of a buckle, Gr, attachedto their. middle part, as shown in fig. il, i'or4 convenience inadjusting the length4 of the tugs; or each of themv may b'e made in onepiece, and the length. of the tugs adjusted-in the'ordinary manner. Inthe case of a single horse, the rollers C and strap E may be attacheddirectly to the thills.

The double-tree, A, constructed as hereindescribed, mayi'also be usedfor a. lead-har, in case more than one pair of horses are used. 'Ifdesired, the straps E and rollers-C may be' attached to an ordinarydouble-tree, that is to say, to a doubletree made without joints.v H isa guide-strap attached to'the end-pieces, ahof the double-tree, near thejoint or hinge by which the said parts, al, are connected tothe centralpart, a2.' The straps H may be rigid metallic straps,- or they may bemade of leather, or other ilexible material. This latter construction ispreferable when the double-tree is usedas a lead-bar g .in othervcaseswe prefer the rigid strap. The4 straps H not as a guard to hold thestraps E awayfrom the wheels when the end parts, al, are drawn back, andthey also enable the straps E to act as a'lcver'to draw the parts, al,into'their proper position, assoonas the obstructing force hasbeenremoved. This construction prevents the-doubletree, every time itencounters an obstruction, from becoming entangled therewith, the jointsenabling Aits ends to give', land thu-s free themselves when obstructed.l

Wcclaim as new, and desire to secure by Letters Patent- Animproved-double-tr'ee, the end partsral, of which-are hinged or jointedto the central part, a, subi- -stcntially as herein shown and described,and for the purpose set forth. i

2. The combination ofthe strap or straps E sind pulleys with the'draught-bar or double-tree, substantially as lherein shown anddescribed, and for thepurpose set forth.

'3. v'lhe combination ofthe'rigid or flexible straps Hwith the end'partsof a jointed doubletree.and with VthestapsE, substantially as hereinshown and described, and for the purpose set forth.

EDWARD GRISWOLD', JOEL B.: CBAMER, WILLAM BLAY.

Witnesses:'

It. LAWRENCE, J. EL 'VInroN.

